A Numerical Study of Unsteady Two-Dimensional Subsonic Compressible Base Flow

In subsonic flow, the wake behind a two-dimensional body with a blunt trailing edge is dominated by a regular array of alternately shed vortices. This separated flow produces a low pressure on the base of the body, resulting in a drag component known as the base drag, which can constitute a major portion of the total drag of the body in many cases. One of the devices that has been found to reduce the base drag in wind-tunnel experiments is a trailing-edge cavity. However, the flow mechanisms responsible for this drag reduction had not been determined from the limited experimental data available. Therefore, the unsteady flow past a slender two-dimensional body with and without a trailing-edge cavity has been studied using numerical solutions of the Navier-Stokes equations.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Rudy, David Henry

• Engineering, Aerospace

Identifier

(UMI)AAI8721747

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70144